CVE-2026-55164

Lemur manages TLS certificate creation. Prior to 1.9.2, lemur.users.service.update assigned a replacement password directly to users.password, while lemur/users/models.py registered User.hash_password only for the before_insert event. Because no before_update listener ran, administrator-initiated password changes through PUT /api/1/users/ were committed as plaintext. The affected user could no longer authenticate normally because bcrypt verification received an unhashed value. A database, backup, replica, query-log, or administrative read compromise exposed immediately usable credentials without offline cracking. The fix registers hashing for before_update and avoids rehashing values that already have a bcrypt prefix. This issue is fixed in version 1.9.2.

CVSS v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/Netflix/lemur/commit/221c6d7275ac667bb8898ab48d2b96926a89c1c4
https://github.com/Netflix/lemur/releases/tag/v1.9.2
https://github.com/Netflix/lemur/security/advisories/GHSA-q437-g7fv-2jvv
https://github.com/Netflix/lemur/security/advisories/GHSA-q437-g7fv-2jvv

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-18 19:16

Updated : 2026-09-08 21:02

NVD link : CVE-2026-55164

Mitre link : CVE-2026-55164

CVE.ORG link : CVE-2026-55164

JSON object : View

Products Affected

No product.

CWE

CWE-256

Plaintext Storage of a Password

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